PROCESS FOR PRODUCING HIGH-PURITY a-ALUMINA
    1.
    发明申请
    PROCESS FOR PRODUCING HIGH-PURITY a-ALUMINA 有权
    生产高纯度α-氧化铝的方法

    公开(公告)号:US20100021374A1

    公开(公告)日:2010-01-28

    申请号:US12518169

    申请日:2007-12-04

    IPC分类号: C01F7/02

    摘要: Provided is a process for producing a high-purity α-alumina in which an Si content, an Fe content, a Ca content, and an Na content are simultaneously removed. The high-purity α-alumina is produced by burning aluminum hydroxide having an Na content of 0.11 mass % or less, an Fe content of 6 ppm or less, a Ca content of 1.5 ppm or less, and an Si content of 10 ppm or less as impurities in terms of alumina respectively, and having an average particle diameter of 55 μm or less at a burning temperature of 1,100 to 1,500° C. by using a burning vessel containing Al2O3 in a range of 85 to 93 wt % and SiO2 in a range of 7 to l4 wt % and subjecting the obtained α-alumina to wash treatment.

    摘要翻译: 提供一种其中同时除去Si含量,Fe含量,Ca含量和Na含量的高纯度α-氧化铝的方法。 高纯度α-氧化铝是通过将Na含量为0.11质量%以下,Fe含量为6ppm以下,Ca含量为1.5ppm以下,Si含量为10ppm的氢氧化铝或 较少作为氧化铝的杂质,并且在燃烧温度为1100〜1500℃时的平均粒径为55μm以下,通过使用含有85〜93重量%的Al 2 O 3的燃烧容器和SiO 2 7至14重量%的范围,并对得到的α-氧化铝进行洗涤处理。

    Process for producing high-purity α-alumina
    3.
    发明授权
    Process for producing high-purity α-alumina 有权
    生产高纯度α-氧化铝的方法

    公开(公告)号:US08124048B2

    公开(公告)日:2012-02-28

    申请号:US12518169

    申请日:2007-12-04

    IPC分类号: C01F7/02

    摘要: Provided is a process for producing a high-purity α-alumina in which an Si content, an Fe content, a Ca content, and an Na content are simultaneously removed. The high-purity α-alumina is produced by burning aluminum hydroxide having an Na content of 0.11 mass % or less, an Fe content of 6 ppm or less, a Ca content of 1.5 ppm or less, and an Si content of 10 ppm or less as impurities in terms of alumina respectively, and having an average particle diameter of 55 μm or less at a burning temperature of 1,100 to 1,500° C. by using a burning vessel containing Al2O3 in a range of 85 to 93 wt % and SiO2 in a range of 7 to 14 wt % and subjecting the obtained α-alumina to wash treatment.

    摘要翻译: 提供一种其中同时除去Si含量,Fe含量,Ca含量和Na含量的高纯度α-氧化铝的方法。 高纯度α-氧化铝是通过将Na含量为0.11质量%以下,Fe含量为6ppm以下,Ca含量为1.5ppm以下,Si含量为10ppm的氢氧化铝或 较少作为氧化铝中的杂质,并且在1100〜1500℃的燃烧温度下的平均粒径为55μm以下,通过使用含有85〜93重量%的Al 2 O 3的燃烧容器和SiO 2 7〜14重量%的范围,对所得的α-氧化铝进行洗涤处理。

    MIXED ALUMINUM HYDROXIDE POWDER
    4.
    发明申请
    MIXED ALUMINUM HYDROXIDE POWDER 有权
    混合氢氧化铝粉

    公开(公告)号:US20100331471A1

    公开(公告)日:2010-12-30

    申请号:US12866038

    申请日:2009-02-02

    IPC分类号: C08K3/22 C01F7/02

    摘要: Provided is a mixed aluminum hydroxide powder suitable as a filler to be filled into a resin or the like, particularly suitable in an application where the filler is desired to be filled in a large amount, and enabling the production of a molded article excellent in strength properties. The mixed aluminum hydroxide powder is obtained by mixing an aluminum hydroxide powder X having an average secondary particle diameter in the range of 5 to 16 μm and a shape coefficient of 4 or less, and an aluminum hydroxide powder Y having an average secondary particle diameter in the range of 0.5 to 2.0 μm and a shape coefficient of 4 or less, the mixed aluminum hydroxide powder being adjusted so as to have an average secondary particle diameter in the range of 0.9 to 12 μm.

    摘要翻译: 本发明提供一种适合填充在树脂等中的填充剂的混合氢氧化铝粉末,特别适用于需要大量填充填料的应用,能够制造强度优异的成形体 属性。 混合氢氧化铝粉末通过将平均二次粒径为5〜16μm,形状系数为4以下的氢氧化铝粉末X和平均二次粒径的氢氧化铝粉末Y混合而获得 0.5〜2.0μm的范围和4以下的形状系数,调整混合氢氧化铝粉末使其平均二次粒径在0.9〜12μm的范围内。

    Mixed aluminum hydroxide powder
    5.
    发明授权
    Mixed aluminum hydroxide powder 有权
    混合氢氧化铝粉末

    公开(公告)号:US08293816B2

    公开(公告)日:2012-10-23

    申请号:US12866038

    申请日:2009-02-02

    IPC分类号: C08K7/00

    摘要: Provided is a mixed aluminum hydroxide powder suitable as a filler to be filled into a resin or the like, particularly suitable in an application where the filler is desired to be filled in a large amount, and enabling the production of a molded article excellent in strength properties. The mixed aluminum hydroxide powder is obtained by mixing an aluminum hydroxide powder X having an average secondary particle diameter in the range of 5 to 16 μm and a shape coefficient of 4 or less, and an aluminum hydroxide powder Y having an average secondary particle diameter in the range of 0.5 to 2.0 μm and a shape coefficient of 4 or less, the mixed aluminum hydroxide powder being adjusted so as to have an average secondary particle diameter in the range of 0.9 to 12 μm.

    摘要翻译: 本发明提供一种适合填充在树脂等中的填充剂的混合氢氧化铝粉末,特别适用于需要大量填充填料的应用,能够制造强度优异的成形体 属性。 混合氢氧化铝粉末通过将平均二次粒径为5〜16μm,形状系数为4以下的氢氧化铝粉末X和平均二次粒径的氢氧化铝粉末Y混合而获得 0.5〜2.0μm的范围和4以下的形状系数,调整混合氢氧化铝粉末使其平均二次粒径在0.9〜12μm的范围内。